* Amplificatore differenziale
ic 3 11 type=idc idc=2m
m1 1 20 3 kp=2m vt=1 w=1u l=1u type=n lambda=0.02
m2 2 21 3 kp=2m vt=1 w=1u l=1u type=n lambda=0.02

rl1 12 1 3k
rl2 12 2 3k

v1 12 0 type=vdc vdc=5
v2 11 0 type=vdc vdc=-5

r1a 12 20 10k
r2a 20 11 10k

r1b 12 21 10k
r2b 21 11 10k

cbp1 30 20 1m
vd 30 0 type=vdc vdc=0 type=sin td=0 vo=0 va=0.5 freq=10k theta=0
vd 0 31 type=vdc vdc=0 type=sin td=0 vo=0 va=0.5 freq=10k theta=0
cbp2 31 21 1m

